Improvement in cores for casting axle-boxes



UNITED STATES PATENT EEICE.

WILLIAM'H. HAWLEY, OF UTIGA, NEW YORK.

IMPROVEMENT IN CRES FOR CASTING AXLE-BOXES.

Specification forming part of Letters Patent No. 106,265, dated August9, 1870. Y

To all whom it may concern:

Be it known that I, WlLLIAM H. HAWLEY, of the city of Utica, in thecounty of Oneida and State of New York, have invented a new and improvedmode or process of casting iron axle or skein boxes around bearings ot'soft, or box, or composition metal, so that such bearings and box can beeasily reamed down, of which the following is a specification:

My invention relates to the arrangement of a gutter between the edge ofa rim upon the interior of an axle or skein box and the adjacent inneredge of a soft, box, or composition metal bearing within said axle orskein box. My invention also relates to the mode of casting this gutterin place; the object of my invention being to separate the inner partsof the said rim and of the adjacent edge ofthe bearing, and thus toenable the interior surface of the box and its bearing to be ream ed outwithout injuring or dulling the tool used in the reaming.

Figure lis a longitudinal section through the center of a newly-castaxle or skein box, showing the arrangement ofthe gutters or channelswhich are the subjects of this invention. Fig. 2 is a longitudinalsection through the center of the axle or skein box when the rimsandbearings have been reamed down, and the gutters reamed ont -orerased, and said axle or skein is in working order.

A (see Fig. l ot' drawing) is the axle or box.

j B B are bearings of composition metal resembling bronze. They may,however, be made ot' soft or box metal and the like. These bearingsextend around the interior of the box, their use being to lessen thefriction arising from the box revolving upon its axle or skein. C C C Care rims or elevations ot' the interior of the axle-box. The use ot'these rims is twofold: iirst, to secure the composition or soft metalbearing in position; secondly, to

support the bearing and protect it from injury by impingement of theaxle. D D D D, Fig. l, are gutters within and extending around theinterior of the box on each inner edge of the soft or composition metalbearings B B, and situate between them and the rims C C C C. Thesegutters do not uextend the entire thickness of the rims down between theedge of the composition or soft metal bearings and the rims, so as toseparate said rims and bearings entirely, but 'they extend down the.height of the bead formed on the core. The height of this bead may varyaccording to the quantity of metal which it is desired to dress oft' orream down. The object ot employing these gutters is to prevent the inneredge ot' the rim and the inner edge ot' the bearing from coming togetherduring the operation of casting the box around the bearing, and tothusprevent, at the point where the rim and bea-ring would meet, theirchilling and forming a substance so hard that no tool in present use cane'ectively cut said hard substance.

My mode of casting the axle or skein box around the bearing is asfollows: The bearing or rin gB, of a suitable size, is rst cast of acomposition metal resembling bronze, or of soft, or box, or other metal.The core-box for the axle or skein box is so made as to receive usuallytwo of these bearings. The core is then formed inside of thecomposition-metal bearings. The core-box is so formed that it leaves abead of sand on the core on each inner edge of the composition-metalbearings. After the core has been formed with these bearings upon it, itis placed in the iiask, and the axle or skein box is then cast 'aroundand over the bearings. By means of the sandbead, already referred'to,the inner edge of the bearing B is separated from the inner edge of therim() or C', and thus the edges of both bearings and of the rims arekept soft, and at the common degree of hardness-only, thus enabling theinterior of both bearing and rim to be reamed down.

I claim- The arrangement upon the core, as herein described, of thesoft-metal bearings Band the sand-bead, whereby, in casting the box,gutters D D are left between the edges of the soft-metal bearings andthe rims G C, substantially as set forth.

WILLIAM H. HAWLEY.

Witnesses ABNER B. GARDNER, DANIEL S. BARRETT.

